Need Sat Math Help!!

<p>i don't get probabilites. plz help me! ASAP....T___T</p>

<p>*IN a room of 30 people, find the probability that at least two people have the same birthday.</p>

<ul>
<li>Five cards are dealt randomly from a standard deck of 52. Find:
a) P (of a "flush")=
b) P ( at least one Ace)=
c) P ( no face cards)=
d) P ( 4 of a kind)</li>
</ul>

<p>*one of the questions were this:
Students Surveyed were asked : "what is your favorite sport"
25% said basketball 30% said football 10% said baseball
20% said soccer 10%said lacrosse 5% said other</p>

<p>if 3 students are selected from this group, find:
a) P(all said basketball) =
b) P(none said basketball) =
c) P(exactly one said football) =
d) P(at least one said soccer) =</p>

<p>*A box contains the following baseballs: 25 Wilson, 30 Diamond, and 18 Rawlings. Six (6) baseballs are randomly selected for a game, find: </p>

<p>a) P (all diamonds)
b) P(all the same brand)
c) P(none are wilsons)
d) P (at least 3 Wilsons)
e) P( 4 are Rawlings)
f) P ( 2 of each brand)
g)P( at least one Diamond ball)</p>

<p>plz..show work...thanxxxx</p>

<p>*A committee of 4 is selected from a group of 5 married couples. Find the probability that no two people on the committe are married to each other.</p>

<p>*WW-P students surveyed were asked: "What is your favorite subject in school?" Results indicated:
20% said Math
10% said Science
15% said Language Arts
20% said Phys Ed
25% said History
10% had no answer or chose something else</p>

<p>If 5 students are randomly selected from this group, find:
a) P (all said Math)
b) P ( at least one said History)
c) P ( all said Science or Phys Ed)
d) P ( at least 3 said Language Arts)</p>

<p>Bump, I'd like to know as well</p>

<p>I highly doubt that these are SAT-type questions, especially the first, and therefore won't be found on the test.</p>

<p>This may help: <a href="http://www.sparknotes.com/testprep/books/newsat/chapter21section3.rhtml%5B/url%5D"&gt;http://www.sparknotes.com/testprep/books/newsat/chapter21section3.rhtml&lt;/a&gt;&lt;/p>